TAS2770 Digital Input Mono Class-D Audio Amplifier with Speaker IV Sense | TI.com

TAS2770
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
Digital Input Mono Class-D Audio Amplifier with Speaker IV Sense

 

To request access to PurePath™ Console 3 and other design resources: Request TAS2770

Description

The TAS2770 is a mono, digital input Class-D audio amplifier optimized for efficiently driving high peak power into small loudspeakers. The Class-D amplifier is capable of delivering 15.4 W of peak power into a 4-Ω load while sustaining 11.6 W continuously with less than 0.03 % THD+N at a battery voltage of 12.6 V.

Integrated speaker voltage and current sense provides for real time monitoring of loudspeaker behavior. A battery tracking peak voltage limiter with brown out prevention optimizes amplifier headroom over the entire charge cycle of 2S or 3S battery systems.

Up to eight devices can share a common bus via either I2S/TDM + I2C.

The TAS2770 device is available in a 26-pin, 0.4-mm pitch QFN for a compact PCB footprint.

Features

  • High-Performance Mono Class-D Amplifier
    • 20-W at 1% THD+N (4 Ω, 16 V)
    • 15.4-W at 1 % THD+N (4 Ω, 12.6 V)
    • 9.1-W at 1 % THD+N (8 Ω, 12.6 V)
    • 7.1-W at 1 % THD+N (4 Ω, 8.4 V)
    • 4-W at 1 % THD+N (8 Ω, 8.4 V)
  • 0.03 % THD+N at 1 W (4 Ω, VBAT = 12.6 V)
  • 32-µVrms A-Weighted Idle Channel noise
  • 90-dB PSRR with 200 mVPP Ripple at 20 - 20 kHz
  • 82.5% Efficiency at 1 W (4 Ω, VBAT = 12.6 V)
  • < 1 µA HW Shutdown VBAT Current
  • 42 mW / 63 mW Idle Dissipation (8.4 V / 12.6 V)
  • Speaker Voltage and Current Sense
  • Real-Time Diagnostics Using I/V Speaker Sense
    • Over Current
    • Short Circuit(short to power, short to ground and terminal-to-terminal short)
    • Over-Temperature
  • VBAT Tracking Peak Voltage Limiter with Brown Out Prevention
  • 44.1-kHz to 192-kHz Sample Rates
  • Flexible User Interfaces
    • I2S/TDM: 8 Channels (32-bit / 96 kHz)
    • I2C: 8 selectable Addresses
  • MCLK Free Operation
  • Low Pop and Click
  • Power Supplies
    • VBAT: 4.5 V to 16 V
    • AVDD: 1.8 V
  • Spread-Spectrum Low EMI Mode
  • Thermal and Over Current Protection

All trademarks are the property of their respective owners.

Parametrics

Compare all products in Speaker amps Email Download to Excel
Part number Order Audio input type Architecture Speaker channels (Max) Power stage supply (Min) (V) Power stage supply (Max) (V) Output power (W) Load (Min) (ohms) SNR (dB) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) Sampling rate (Max) (kHz) PSRR (dB) Operating temperature range (C) Rating
TAS2770 Order now Digital Input     Class-D
Smart Amp    
Mono     4.5     16     20     4     108     0.007     7.07     I2C     Closed     4.5     16     192     90     -40 to 85     Catalog    
TAS2552 Order now Analog Input
Digital Input    
Class-D Boosted
Smart Amp    
Mono     2.7     5.5     4     6     94     0.1     6.54     I2C     Closed     2.7     5.5     192     75     -40 to 85     Catalog    
TAS2557 Order now Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     5.7     4     111     0.0035     3.9     I2C
SPI    
Closed     2.9     5.5     96     110     -40 to 85     Catalog    
TAS2559 Order now Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     5.7     4     111     0.0035     3.9     I2C
SPI    
Closed     2.9     5.5     96     110     -40 to 85     Catalog    
TAS2560 Order now Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     5.6     4     111     0.004     3.2     I2C